E5C02 In polar coordinates, what is the impedance of a network consisting of a 100-ohm-reactance inductor, a 100-ohm-reactance capacitor, and a 100-ohm resistor, all connected in series?
A. 100 ohms at an angle of 90 degrees
B. 10 ohms at an angle of 0 degrees
C. 10 ohms at an angle of 90 degrees
D. 100 ohms at an angle of 0 degrees
- (D)
- This is a resonant circuit because the capacitive and inductive reactances are equal. That means that the reactances cancel and you have only the resistance left, which is an impedance of 100 ohms with no reactive phase shift (angle = 0°).